Why don’t you watch his review and find out? Both 4K ProRes and h264 encodes with a 19min 10bit input and a mix of gnarly codecs such as XF AVC, Dolby Vision iPhone and Cannon 8k. 4x faster on h264, 10x faster on ProRes whilst using only 10% battery life vs 75% on the Intel machines (even those including the T2 chip with hardware encoder).
There’s many YouTube reviews showing the same….video editors are gobsmacked at what these new M1 Max machines are capable of….when they make statements such as “this is faster than my $15k 18c Mac Pro with Afterburner and 192Gb”, you can guarantee that this is a paradigm shift for many pros. What previously needed a desktop computer and an office can now be done mobile, on battery in the client’s office.